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All CERN Accelerators documents

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2025-03-05
14:40
Report from the Conventional Beams Working Group to the Physics Beyond Colliders Study and to the European Strategy for Particle Physics / Bernhard, Johannes (CERN) ; Banerjee, Dipanwita (CERN) ; Baratto Roldan, Anna (CERN) ; Brugger, Markus (CERN) ; Charitonidis, Nikolaos (CERN) ; d'Allesandro, Gian Luigi (CERN) ; Van Dijk, Maarten (CERN) ; Doble, Niels (CERN) ; Dyks, Luke Aidan (University of Oxford (GB)) ; Gatignon, Lau (Lancaster University (GB)) et al.
This document summarises the main conclusions of the Conventional Beams Working group, which has analysed the beam-related and technical requirements and requests in the proposals to the Physics Beyond Colliders study, mainly for the North Area at the CERN SPS. We present results from studies on feasibility, requirements, compatibility between proposals and, where possible, the order of magnitude of the costs. [...]
CERN-PBC-REPORT-2025-001.- Geneva : CERN, 2025

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2025-03-04
06:16
Observation of direct CP violation in $D^0$ meson decays at LHCb / Betti, Federico (Bologna U. ; INFN, Bologna)
A search for charge-parity (CP) violation in $D^0$ $\to$ $K^-K^+$ and $D^0$ $\to$ $\pi^- \pi^+$ decays is reported, using $pp$ collision data corresponding to an integrated luminosity of 5.9 fb$^{-1}$ collected at a center-of-mass energy of 13 TeV with the LHCb detector. The flavor of the $D^0$ meson is determined from the charge of the pion in $D*$(2010)$^+ \to D^0$ $\pi^+$ decays or from the charge of the muon in $\bar{B} \to$ $D^0 \mu^-$ $\bar{\nu}_{\mu} X$ decays. [...]
2020 - 6 p. - Published in : Nuovo Cimento C 43 (2020) 41 Fulltext: PDF;
In : 18th Incontri di Fisica delle Alte Energie, Naples, Italy, 8 - 10 April 2019, pp.41

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2025-03-03
17:29
Modeling X-Y Beam Distributions via Crossing of Coupled Resonances in an Accelerator Complex / Lamb, Elleanor
Key words: luminosity, van der Meer, non-factorization, resonance, calibration, losses In high-energy colliders, discoveries are made possible by improving precision and accuracy of the measured rare events. Precision is maximized by increasing the collider integrated luminosity, whereas accuracy is addressed by minimizing the systematic errors via ad-hoc luminosity calibrations of the detectors. [...]
CERN-THESIS-2024-348.- 140 p. Fulltext: PDF; External link: Approve this document (restricted)

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2025-03-03
15:16
Characterization, Control and Alignment of Crystal Collimators of the High Luminosity Large Hadron Collider (HL-LHC) / Ricci, Gianmarco (Sapienza Universita e INFN, Roma I (IT))
The Large Hadron Collider (LHC), the world’s most powerful particle accelerator, is undergoing a significant upgrade to increase both its luminosity and operational lifespan. The LHC upgrade project is referred to as the High-Luminosity Large Hadron Collider (HL-LHC). [...]
CERN-THESIS-2024-347.- 149 p. Fulltext: PDF; External link: Approve this document (restricted)

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2025-03-03
09:36
Need of reference proton data for the DICE/NA60+ experiment / Scomparin, Enrico (Universita e INFN Torino (IT)) ; Usai, Gianluca (Universita e INFN, Cagliari (IT))
In this document we motivate the need for data taking in proton-nucleus at collision energies per incident nucleon corresponding to those of nucleus-nucleus interactions. With a non-expert audience in mind, we show that this is a general requirement for all experiments working with relativistic heavy-ion collisions and further demonstrate this case for a few observables that are crucial for the NA60+ experiment at the CERN SPS..
CERN-PBC-Notes-2025-003.- Geneva : CERN, 2025 - 7. Fulltext: PDF;

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2025-02-28
18:08
Computational Studies and Simulation of the MNP33 and MEP48 Magnets for DICE/NA60+ / Stummer, Florian Wolfgang (CERN)
CERN-PBC-Notes-2025-002.- Geneva : CERN, 2025

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2025-02-28
16:19
Thin Films on Copper for Superconducting RF Cavities within the Future Circular Collider Study / Fonnesu, Dorothea (Universitaet Siegen (DE))
Abstract The Future Circular Collider (FCC) Study is a collaborative international initiative led by the European Organisation for Nuclear Research (CERN). Its primary objective is to assess the feasibility of a new circular collider intended to explore physics beyond the Standard Model. [...]
CERN-THESIS-2023-435.- Siegen : OPUS Siegen, 2024-11-04 - 158 p. Fulltext: PDF; External link: Approve this document (restricted)

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2025-02-28
10:45
Report Accelerator Complex Availability 2024 / Felsberger, Lukas (CERN) ; Alexaki, Paraskevi (National and Kapodistrian University of Athens (GR)) ; Asko, Anti (CERN) ; Charitonidis, Nikolaos (CERN) ; Heron, Jack (CERN) ; Mikulec, Bettina (CERN) ; Rae, Bastien (CERN) ; Uythoven, Jan (CERN) ; Wollmann, Daniel (CERN)
This document summarises the availability of the CERN Accelerator Complex during 2024. [...]
CERN-ACC-NOTE-2025-0003. - 2025
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2025-02-28
04:00
FCC-ee positron source from conventional to crystal-based / Alharthi, Fahad (KACST, Riyadh ; IJCLab, Orsay) ; Chaikovska, Iryna (IJCLab, Orsay) ; Chehab, Robert (IJCLab, Orsay) ; Mytrochenko, Viktor (IJCLab, Orsay) ; Wang, Yuting (IJCLab, Orsay) ; Zhao, Yongke (CERN) ; Bandiera, Laura (INFN, Ferrara) ; Canale, Nicola (INFN, Ferrara) ; Guidi, Vincenzo (INFN, Ferrara ; Ferrara U.) ; Malagutti, Lorenzo (INFN, Ferrara) et al.
The high-luminosity requirement in future lepton colliders imposes a need for a high-intensity positron source. [...]
arXiv:2502.06481. - 6.
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2025-02-26
16:43
Beam-beam effects in future high energy circular lepton colliders / Kicsiny, Peter
High energy lepton colliders are factories of particles. By fine tuning these highly complex machines to resonances, these particles can be produced in large numbers [...]
CERN-THESIS-2024-342.- 202 p. Fulltext: PDF; External link: Approve this document (restricted)

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